Environmental heating and cooling; fluid handling and sanitary e – Heating or cooling – Element or attachment – not elsewhere specified
Patent
1983-06-15
1987-02-03
Largen, James R.
Environmental heating and cooling; fluid handling and sanitary e
Heating or cooling
Element or attachment, not elsewhere specified
D23 20, D23 36
Patent
active
D02881195
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patent: 4457031 (1984-07-01), Moore
Hill Charles P.
Spangler Anthony G.
Largen James R.
Masco Corporation of Indiana
Permut Steven L.
Zarins Edgar A.
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